Water → ethyl 2,4-dibromo-3-(N,N-di-n-propylaminocarbonylmethoxy)benzoate

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Reaction Steps

0.853 g of K2CO3, 0.154 g of KI and 1.000 g of ethyl 2,4-dibromo-3-hydroxybenzoate were introduced in 10 ml of acetone. At RT 0.783 g of N,N-di-n-propylchloroacetamide was added. The mixture was then heated at reflux for 4 hours. It was subsequently poured into water and extracted with diisopropyl ether. The organic phases were washed with water, dried over Na2SO4 and concentrated. Chromatography on silica gel (eluent: n-heptane/ethyl acetate) gave ethyl 2,4-dibromo-3-(N,N-di-n-propylaminocarbonylmethoxy)benzoate as brown oil.

Provenance & Evidence